Overwhelmed and Overloaded

With the economic downturn, I worry about losing my job. My boss already laid off a few people which increased my work load. I won’t complain because I need my job, but I’m overwhelmed and concerned about meeting expectations. Any thoughts?
Interestingly, I just finished reading a little book entitled “Simplify Your Work Life” by Elaine St. James. One chapter dealt with being overwhelmed at work. Since I practice her suggestion periodically when life reaches nuclear overload, I will pass it on to you.
With your concerns, I’m certain my first recommendation will seem bizarre. But if at all possible, take an entire day off as soon as possible. On that day, you are not to run errands. Instead, take walks, read material - not work related - indulge in a Frappaccino. Take your Frappaccino and go somewhere – a park, a mall, or stay at a coffee shop – and just watch people.
At some point, go to your favorite restaurant and allow yourself to be served something wonderful. Curl up in your favorite chair with some calming background music and take a nap, read a light novel or flip through magazines you haven’t had the time for in previous months. Check out a light-hearted movie and then go to bed early. You will feel refreshed the next day, your brain will have re-booted and I’m certain that you will be highly productive.
If you cringe at the day off recommendation, there is another suggestion. When you sense the “I’m on the edge” feeling building to a crescendo, leave your work station for 10 minutes. Go outside; breathe in some fresh air; walk around the building once or twice; listen to the birds; smell the grass; then go back to work. People will assume you went to the bathroom and won’t miss you during your 10 minute mini-vacation. Taking these simple breaks will improve your productivity. Staying in the overwhelmed state of mind is ultimately unproductive for 99 per cent of us.
Since you appear to be uncomfortable communicating your work load concerns with your boss, attempt at least one of the above recommendations. Doing nothing will eventually have a negative impact on both your work and your health.